Novel variable capacitance compressor

Abstract

The invention provides a novel variable capacitance compressor, which comprises an upper flange, an upper cylinder, a partition plate, a lower cylinder, a lower flange and a lower flange cover, wherein a lower sliding piece is arranged in the lower cylinder; the compressor further comprises a variable capacitance mechanism, which is arranged on the lower flange and comprises a locking structure and a three-way reversing valve; low-pressure gas is admitted into the bottom of the locking structure; the top of the locking structure communicates with the lower sliding piece; when the three-way reversing valve introduces the low-pressure gas to the top of the locking structure, the locking structure moves upwards to fix the lower sliding piece; when the three-way reversing valve introduces thehigh pressure gas to the top of the locking structure, the locking structure moves downwards to unlock the lower sliding piece. The novel variable capacitance compressor provided by the invention realizes the variable capacitance switching of the compressor pump body by the three-way reversing valve designed in the pump body assembly and relying on an air conditioner system controller to control the switch of the three-way reversing valve; without arranging a variable capacitance control interface and a corresponding air conditioning system pipeline additionally, the air conditioning system issimplified greatly; a variable capacitance control liquid separator of the compressor and a connecting pipe of the air conditioning system are saved; the cost of the compressor and air conditioning system is greatly reduced, and due to the optimization of the system pipeline, the resonance is reduced and the noise value is also reduced.

Description

Technical field [0001] The invention mainly relates to the field of compressors, in particular to a variable capacity compressor. Background technique [0002] Take the roller type two-cylinder compressor as an example. The existing conventional variable displacement compressor generally has an upper cylinder and a lower cylinder in the casing. The upper and lower cylinders have suction and exhaust ports respectively, and the upper cylinder is used as a normal cylinder , The lower cylinder is used as a variable capacity cylinder. When the lower cylinder is unloaded, the compressor switches to single cylinder mode, and when the lower cylinder is loaded, the compressor switches to double cylinder mode. [0003] Existing conventional variable displacement compressors lock and unlock the sliding plate by the pin-to-sliding plate placed in the pin hole of the lower flange and forming a pressure difference or a balanced pressure by connecting gases of different pressures. However, this...

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Problems solved by technology

However, this solution relies on the introduction of the air conditioning system to realize the switching of the variable capacity of the compressor. Not only does it need to design an external liquid separator to control the variable capacity outside the compressor, which increases the cost of the compressor, but also makes the pipeline of the air conditioning system Complicated, when the compressor starts to run, it is easy to cause the resonance of the air conditioning system pipeline, which increases the noise value, and the increase of the air conditioning system pipeline (copper pipe) also increases the cost of the air conditioner

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